And while on the topic of quality over quantity, recently I came across another site with a similar focus toward games. Mark Hurst specializes in usability issues from the perspective of customer experience, and he has put up a web page that highlights some of the best Web games available.
Since Mark and I both share a similar perspective as far as games are concerned, there is a fair amount of overlap between our sites. However, as with anything subjective as someone's recommendations, there is always room for a second opinion. Click.
Cheers, Mark! =)